750mm Width 300mm Depth

Please use the drop down menus below to select the diameter of the round end, the round end fit, the style, and the connection for the square end.

If you wish to fine-tune the size please use the 'Other info' box below. Unless requested otherwise, the length of the square to round will be determined by us in accordance with standard ductwork specification. If you choose to define your own length, please give the overall length including the round spigot.

Note that with offset square to rounds the flat side will correspond with the 'width' side. If you require the other side to be the flat side i.e the 'depth' side as shown in the drawing, go back and make the width the depth and vice-versa.